<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            border: 1px solid hotpink;
            /* 给父盒子一个高度 */
        }
        /* 第二种 */
        /* img {
            display: block;
        } */
    </style>
</head>

<body>
    <div>
        <a href="#">
            <img src="./1 (2).jpg" alt="">
        </a>
    </div>
</body>

</html>